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Details of the Statements of Profit or Loss and Other Comprehensive Income (Schedule of Costs and Depreciation) (Details) - EUR (€) € in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Details Of Statements Of Profit Or Loss And Other Comprehensive Income Revenues
Depreciation from fixed assets	€ 5,744	€ 5,500	€ 4,518
Depreciation from Right-of-use assets	321
Amortization	351	316
Professional services	663	375	210
Annual rent	9	390	267
Operating and maintenance services	5,322	4,942	1,574
Insurance	344	245	203
Other	300	390	295
Total operating costs	€ 13,054	€ 12,158	€ 7,067

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Total operating costs.

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The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives.

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The amount of depreciation expense. Depreciation is the systematic allocation of depreciable amounts of tangible assets over their useful lives.

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The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets]

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The amount of expense arising from purchased insurance.

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The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)]

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The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature]

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The amount of fees paid or payable for professional services.

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The amount of expense recognised on rental activities.

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